Additional file 4.

BEB analysis of MSTN-1a/1b and MSTN-2a/2b. The amino acid letter represents the amino acid for that position in the first sequence
of the alignment used to for the analysis (O. kisutch for MSTN-1a/1b and C. clupeaformis
for MSTN-2a/2b). An * indicates there was a gap in the alignment at that position
for the first sequence in the alignment. Only sites with probabilities greater than
95% are listed.